I. [Product Description]
PEG-SS-COOH is a polyethylene glycol derivative with a reduction-responsive disulfide bond and carboxyl functionalization. As a high-performance organic intermediate, it is widely used in the fields of nanomaterial synthesis and bioconjugation. Its unique disulfide bond structure can be controllably broken in a reducing environment. Combining the excellent hydrophilicity and adjustable molecular weight characteristics of the PEG segment, it becomes an ideal choice for drug carrier construction and functional modification.

II. [Product Details]
【Appearance】 Depending on different molecular weights, it appears as a white/off-white solid or a viscous liquid.
【Stability】 Store under refrigeration and avoid repeated freezing and thawing.
【Solvent】 Conventional organic solvents such as chloroform, dichloromethane, and DMSO.
【Molecular Weight】 (PEG): 2000, 3400, 5000. Other molecular weights can be customized.
【Storage Conditions】 Store in a sealed, dry environment at a low temperature below 4°C.
▪ Note: ▶ To ensure product stability, please open the package for use after constant-temperature drying!

III. [Application Fields]
1. Preparation of stimuli-responsive nanoparticles (ACS Nano, 2022)
2. Functional interface modification of intelligent delivery systems (Advanced Materials)
3. Protein/nucleic acid bioconjugation reactions (Bioconjugate Chemistry)
4. Synthesis of amphiphilic block copolymers (Macromolecules)
5. Construction of biosensor probes (Analytical Chemistry)

Remarks: The products sold by our company are only for scientific research and cannot be used in human experiments or human treatment.

Chongqing Yusi Pharmaceutical Technology Co., Ltd. is based on an integrated business model of independent R & D, production, and sales, providing professional research reagents for scientific experiments in universities. Compared with similar products on the market, our company's products have obvious price advantages. In addition, we also provide professional product customization services.

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Contact Information:
Landline: 023-62795528
Customer Service Hotline: 19112925095 丨 QQ: 3012135199
                                           18896157519 丨 QQ: 3354316092

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